Pizza stone



FIG. 1 is a perspective view of the pizza stone showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a side view thereof, all side views being identical; and,

FIG. 4 is bottom view thereof.

The dotted lines shown in the drawings do not make up any part of the claimed design. 

CLAIM The ornamental design for a pizza stone, as shown and described. 